This webpage hosts summary plots for Rosenberger and Bottoms (in prep). Analyses use data from DFO’s New Salmon Escapement Database Systems (NUSEDs) up to 2022.
Escapement plots over time, by species, by Conservation Unit. Colours represent whether or not the stream qualified for analysis in this study. Solid vertical lines denote the establishment of the Great Bear Rainforest Special Protection Area (GBR SPA) in 2007 and dashed vertical lines represent the cutoff for the current generation included in the analyses.
| Species | Included in analysis | Number of streams |
|---|---|---|
| Chinook | Y | 70 |
| Chum | Y | 198 |
| Coho | Y | 202 |
| Pink (Even years) | Y | 193 |
| Pink (Odd years) | Y | 202 |
| Sockeye | Y | 48 |
| Chinook | N | 48 |
| Chum | N | 278 |
| Coho | N | 296 |
| Pink (Even years) | N | 275 |
| Pink (Odd years) | N | 252 |
| Sockeye | N | 69 |
This section compares trends in escapements by Conservation Unit on all waterbodies selected for analysis by period.
Periods are defined as:
all :
cgen :
preGBR :
postGBR :
Comparisons across all Conservation Units
This section shows how trends compare across periods. Comparison periods are defined as:
trnd.cgen.all:
trnd.cgen.pre:
cgen is performing against the trend over three generations
prior to the GBR SPA.trnd.post.all:
trnd.post.pre:
Comparisons across all Conservation Units